#include<google/protobuf/service.h>
class MyRpcChannel: public google::protobuf::RpcChannel
{
public:
   void CallMethod(const google::protobuf::MethodDescriptor* method,
                          google::protobuf::RpcController* controller, const google::protobuf::Message* request,
                          google::protobuf::Message* response, google::protobuf::Closure* done);
};
